Evolutionary aspects of urea cycle enzyme genes
- 1 May 1989
- Vol. 10 (5) , 163-166
- https://doi.org/10.1002/bies.950100506
Abstract
The functions and expression pattern of urea cycle enzymes have undergone considerable changes during the course of evolution. Sequence analyses shows that urea cycle enzymes from mammals are homologous to microbial enzymes of the arginine‐metabolic pathway. Recently, an unexpected relationship was found between argininosuccinate lyase (EC 4.3.2.1), the fourth enzyme of the cycle, and δ‐crystallin, a lens structural protein of birds and reptiles.Keywords
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